PubMed · 7449391
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
J Widimský. 1980. Pulmonary circulation: introduction.. https://pubmed.ncbi.nlm.nih.gov/7449391/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
In deep venous thrombotic and aplasia cases superficial veins become dilated. With the resulting incompetence of the valves, venous blood stream is not directed to the heart, but to the ankle as well. In these cases the superficial system does not support the venous drainage of the limb, but gives a further load. The question is if one can ameliorate the venous drainage with removal of insufficient varicose veins, or does it make the outcome worse? A new examination was developed to determine if collateral veins in the subfascial space are enough to drain the venous blood of the limb. A tensiometer cuff was placed on the limb and inflated. The patient was asked to walk, if it was performed without complaints then the results was negative and the superficial veins were removed. In these cases no venous disturbances were detected during the operation or following that, in spite of the absence of deep venous circulation and radical removal of varicose venous bed. It means, that in the absence of deep venous circulation develops a collateral circulation not only in the subcutaneous, but in the subfascial space as well and it can alone maintain the venous drainage of the limb, this is the third venous system of the leg.
Explore the source record for details and available documents.
The purpose of this study was to demonstrate the utility of helical CT in assessing the therapeutic effects of endoscopic variceal ligation (EVL). Twenty-four patients with esophageal varices were examined. Helical scanning was initiated 60 s after intravenous injection (Iopamidol 300 mgI/ml, total 120 ml, 3 ml/s) was started. Esophageal varices were clearly depicted as high-density areas. Multiplanar reformation and 3D images demonstrated collateral circulation three-dimensionally. After EVL, mucosal high-density areas had diminished markedly, but collateral veins around the esophagus, and gastro- and/or spleno-renal shunts, were unchanged in all patients. Of 21 patients with collateral circulation, esophageal varices recurred endoscopically in 6 patients within 12 months. In 3 patients without collateral circulation, esophageal varices did not recur within 12 months. From these findings, we conclude that helical CT is a useful method for assessing the therapeutic effects of EVL.